code: def cleanup():
      """Removes any temporary file / directory created by EvaDB."""
      if os.path.exists("evadb_data"):
          shutil.rmtree("evadb_data")
      if os.path.exists(QUESTION_PATH):
          os.remove(QUESTION_PATH)
      if os.path.exists(SCRIPT_PATH):
          os.remove(SCRIPT_PATH)
  
file_path: evadb/apps/pandas_qa/pandas_qa.py
imports: import os
  import shutil
  import subprocess
  from typing import Dict
  import pandas
  import evadb
label_desc: Use image node_id 4 for calling a global function with example usage: cleanup() without return types